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背景:预防前十字韧带损伤对运动员非常重要,动态膝关节外翻被认为是导致非接触性前十字韧带损伤的危险因素之一,但髋关节外展肌群和后足的功能能否增加动态膝关节外翻的相关研究较少。通过二维视频分析筛选测试能检验髋关节外展肌和后足功能,包括由此影响动态膝关节外翻的因素。本研究旨在探索髋关节外展肌和后足动态校准与动态膝关节外翻间的关系。方法:该横断面研究招募来自9所高中的130名女篮运动员(258条腿)。让运动员进行单腿下蹲和单腿落地动作,通过二维视频图像记录膝关节斜收(KID)和髋关节探出(HOD)的距离。用动态Trendelenburg卧位测试(DTT)和动态足后跟—地板测试(HFT)评估髋关节外展肌和后足的动态校准。结果:卡方检验显示,单腿下蹲(28.7%)和单腿落地(23.3%)两个动作相比,DTT阳性分布无显著差异,单腿落地(51.4%)HFT阳性分布显著大于单腿下蹲动作(31.0%,p<0.01)。DTT阳性组单腿下蹲和单腿落地的KID值均大于DTT阴性组(15.1±5.4 cm vs.20.2±7.5 cm,p<0.001),DTT阳性组的HOD值也更大(15.2±1.9 cm和17.6±2.8 cm,p<0.001)。HFT阳性组单腿下蹲和单腿落地的KID值大于HFT阴性组(12.2±5.1 cm,p<0.01;14.7±7.2 cm,p<0.001),但两组HOD值无显著差异。结论:动态髋关节不良校准可能与KID和HOD有较强相关,而后足外翻只与KID有较强相关。髋关节外展肌和后足动态校准功能紊乱是导致动态膝关节外翻的重要因素,通过评估DTT和HFT将有助于预防动态膝外翻。
BACKGROUND: Prevention of anterior cruciate ligament injury is important for athletes. Dynamic knee valgus is considered as a risk factor for non-contact anterior cruciate ligament injury. However, does the function of hip abductor muscles and hindpaws increase their dynamics There are few researches on valgus knee. Screening tests through two-dimensional video analysis can test hip abductor and hind paw functions, including the factors that affect dynamic knee valgus. The aim of this study was to explore the relationship between hip abductor abductors and hindfoot dynamic calibration and dynamic knee valgus. METHODS: This cross-sectional study recruited 130 women basketball players (258 legs) from 9 high schools. Allow athletes to perform single-leg squatting and single-legged ground motion recording the distance between knee KID and HOD through 2D video images. Dynamic calibration of the abductor and hind feet of the hip was evaluated using the dynamic Trendelenburg lying test (DTT) and the dynamic heel-floor test (HFT). Results: The chi-square test showed that there was no significant difference in DTT positive distribution between single-leg squatting (28.7%) and single-legged landing (23.3%). HFT positivity was significantly greater in one leg (51.4% Squatting movements (31.0%, p <0.01). The KID values of one-leg squatting and one-legged landing in DTT positive group were higher than those in DTT negative group (15.1 ± 5.4 cm vs.20.2 ± 7.5 cm, p <0.001), and those in DTT positive group were also larger (15.2 ± 1.9 cm And 17.6 ± 2.8 cm, p <0.001). The KID value of one-leg squatting and one-legged landing in HFT positive group was greater than that in HFT negative group (12.2 ± 5.1 cm, p <0.01; 14.7 ± 7.2 cm, p <0.001). However, there was no significant difference in HOD between the two groups. CONCLUSIONS: Poor dynamic hip dysplasia may be strongly related to KID and HOD, while hindpaw eversion only correlates strongly with KID. Hip Abductor and Hindfoot Dynamic Calibration Disorders are an important contributor to dynamic knee valgus assessment and evaluation of DTT and HFT will help to prevent dynamic knee valgus.